Hail map — August 17, 2023
NOAA radar detected hail of an inch or more over 12 cities across 4 states on August 17, 2023. The largest stones — 1.00″, quarter size — fell over Fort Lauderdale, FL.
- States hit
- 4
- Cities hit
- 12
- Largest stone
- 1.00″
- quarter size
- Impact rating
- 3/10
- from stone size
Sizes come from NOAA MRMS radar (MESH), which runs about ±0.25″ against ground truth. It is canvass-targeting quality, not claim evidence.
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States hit on August 17, 2023
Every state where NOAA radar put an inch or more of hail over a city that day, biggest stone first.
Hardest hit on August 17, 2023
What people on the ground measured in the US on August 17, 2023
15 reports filed with the National Weather Service — 4 from trained spotters or officials. These are measured stones, not radar estimates, so they are the closest thing to proof that hail actually reached the ground.
- 1.75″ golf ball size Broadcast MediaAledo, IL6:06 AM CDTMercer County
- 1.75″ golf ball size CO-OP Observer1 NNE Geneseo, IL6:34 AM CDTHenry County
Golfball sized hail.
- 1.50″ half dollar size Broadcast MediaNew Philadelphia, IL7:31 AM CDTMcDonough County
quarter to ping pong, time estimated from radar.
- 1.25″ half dollar size Broadcast MediaAledo, IL6:07 AM CDTMercer County
Mix of quarter to half dollar size hail falling, report relayed from broadcast media.
- 1.25″ half dollar size Public2 SSE Osborn, IL6:30 AM CDTHenry County
- 1.25″ half dollar size PublicLa Fontaine, IN6:30 PM EDTWabash County
- 1.25″ half dollar size Trained Spotter2 N Arcana, IN6:45 PM EDTGrant County
- 1.00″ quarter size Broadcast MediaSouth Beloit, IL5:26 AM CDTWinnebago County
Time estimated by radar.
- 1.00″ quarter size Broadcast Media4 N Geneseo, IL6:34 AM CDTHenry County
- 1.00″ quarter size Public1 SE Smithfield, IL7:45 AM CDTFulton County
Relayed via social media.
- 1.00″ quarter size Trained Spotter2 W West Palm Beach, FL4:20 PM EDTPalm Beach County
Trained Spotter reported quarter-size hail for a duration of 5-10 minutes at the intersection of village blvd and palm beach lakes blvd at 4:20pm as a severe thunderstorm moved through the area.
- 1.00″ quarter size Trained Spotter2 SE Goblesville, IN6:03 PM EDTHuntington County
Spotter also reported 50 mph wind gusts.
- 0.75″ penny size Trained Spotter3 ENE Burgess, IL6:14 AM CDTMercer County
lasted for about 2-3 min, time estimated from radar.
- 0.70″ penny size Broadcast Media1 SSW East Moline, IL6:20 AM CDTRock Island County
- 0.70″ penny size Broadcast MediaMoline, IL6:21 AM CDTRock Island County
Showing the 15 largest of 17 hail reports filed that day.
Reports come from the National Weather Service Local Storm Report feed, ingested every 15 minutes. A report records where the observer was, not the full extent of the swath — treat it as evidence about the storm, not about any one roof.
Other hail days
US hail on August 17, 2023
NOAA radar put hail of an inch or more over 12 cities across 4 states on August 17, 2023. The largest stones — 1.00 inches, quarter size — were over Fort Lauderdale, FL. Every state hit is listed on this page, and every city under it.